CN213816308U

CN213816308U - Improved lithium iron phosphate lithium ion power battery structure

Info

Publication number: CN213816308U
Application number: CN202022810618.8U
Authority: CN
Inventors: 周志才; 江苏平; 卢克荣
Original assignee: Guizhou Wanfeng Boyineng Technology Co ltd
Current assignee: Shenzhen Zhongrui Power Technology Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-07-27
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses an improved lithium iron phosphate lithium ion power battery structure, which comprises a shell, wherein an electrothermal film is laid on the inner wall of the shell, one side of the electrothermal film is fixedly connected with a fixing frame through a second fixing column, the inner side wall of the fixing frame is fixedly connected with a damping spring, one end of the damping spring is fixedly connected with a damping plate, and the bottom of the fixing frame is fixedly connected with damping cotton, the utility model discloses a temperature sensor, a controller and a temperature sensor are arranged to be mutually matched for use, so that in cold winter, the temperature sensor monitors the temperature of the lithium iron phosphate lithium ion power battery structure, when the temperature is very low, the temperature sensor transmits temperature data to the controller, and the controller controls the electrothermal film to be opened, so that the electrothermal film generates heat, and the heat is heated for the lithium iron phosphate lithium ion power battery through a vent hole on the surface of the fixing frame, thereby ensuring the use effect of the lithium iron phosphate lithium ion power battery structure.

Description

Improved lithium iron phosphate lithium ion power battery structure

Technical Field

The utility model relates to a lithium iron phosphate battery technical field specifically is a modified lithium iron phosphate lithium ion power battery structure.

Background

The lithium iron phosphate battery is a lithium ion battery taking lithium iron phosphate as a positive electrode material, when the lithium iron phosphate battery is charged, part of lithium ions in the lithium iron phosphate are extracted and transferred to a negative electrode through an electrolyte, meanwhile, electrons are released from the positive electrode and reach the negative electrode from an external circuit, the balance of chemical reaction is maintained, when the lithium iron phosphate battery is discharged, the lithium ions are extracted from the negative electrode and reach the positive electrode through the electrolyte, meanwhile, the electrons are released from the negative electrode and reach the positive electrode from the external circuit, and energy is provided for the outside;

however, since the lithium iron phosphate battery has high power and energy density and no safety problem, the application range of the lithium iron phosphate battery at high temperature and normal temperature is rapidly expanded, but the lithium iron phosphate battery cannot maintain the performance at the normal temperature when the use temperature is lower than-20 ℃, but the lithium iron phosphate battery is used at the low temperature of-20 ℃ or lower for some applications, the battery performance is obviously deteriorated at the low temperature of-20 ℃ or lower, and the existing lithium iron phosphate battery has poor protection performance. Therefore, an improved lithium iron phosphate lithium ion power battery structure is provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modified lithium iron phosphate lithium ion power battery structure to solve the problem that provides in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: an improved lithium iron phosphate lithium ion power battery structure comprises a shell, wherein an electrothermal film is laid on the inner wall of the shell, one side of the electric heating film is fixedly connected with a fixing frame through a second fixing column, the inner side walls of the fixing frame are fixedly connected with damping springs, one end of the damping spring is fixedly connected with a damping plate, the bottom of the fixing frame is fixedly connected with damping cotton, the upper end of the damping cotton is fixedly connected with a cushion rubber pad, a lithium iron phosphate battery is arranged at the upper end of the cushion rubber pad, the damping plate is tightly attached to the outer side of the lithium iron phosphate battery, the lower end face of the fixing frame is provided with a temperature sensor, the upper end of the shell is detachably connected with an upper cover through a bolt, the upper end of the upper cover is provided with a control box, the control box internally mounted has the controller and control box upper end fixedly connected with positive electrode and negative electrode, the negative electrode is located positive electrode one side.

Preferably, the controller is respectively and electrically connected with the temperature sensor and the electrothermal film.

Preferably, a first fixing column is arranged on one side of the electric heating film, and the upper end and the lower end of the first fixing column are fixedly connected with the fixing frame and the shell respectively.

Preferably, the inner wall of the fixing frame is provided with a plurality of groups of air holes.

Preferably, the upper end face of the shell is provided with a slot, the lower end face of the upper cover is fixedly connected with an insertion block, and the insertion block is matched with the slot.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a be provided with the electric heat membrane, controller and temperature sensor, make it use of mutually supporting, make in chilly winter, temperature sensor monitors the temperature of lithium iron phosphate lithium ion power battery structure, when the temperature is very low, temperature sensor transmits temperature data for the controller, and the controller control electric heat membrane is opened, make the electric heat membrane generate heat, make the heat by the venthole on mount surface heat lithium iron phosphate lithium ion power battery, thereby the result of use of lithium iron phosphate lithium ion power battery structure has been guaranteed.

2. The utility model discloses a be provided with damping spring and shock attenuation board, make its use of mutually supporting, can play fine buffering shock attenuation to the lithium iron phosphate battery to prevent the phenomenon that the lithium iron phosphate battery from bumping and damaging because of vibrations.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the housing of the present invention;

fig. 3 is a schematic view of the structure of the upper cover of the present invention.

In the figure: 1. a housing; 2. a lithium iron phosphate battery; 3. a first fixed column; 4. a cushion rubber pad; 5. damping cotton; 6. a temperature sensor; 7. an electrothermal film; 8. a second fixed column; 9. a fixed mount; 10. a control box; 11. a positive electrode; 12. a negative electrode; 13. an upper cover; 14. a damping spring; 15. a damper plate; 16. a slot; 17. and (5) inserting the blocks.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-3, the present invention provides a technical solution: an improved lithium iron phosphate lithium ion power battery structure comprises a shell 1, wherein an electrothermal film 7 is laid on the inner wall of the shell 1, one side of the electrothermal film 7 is fixedly connected with a fixed frame 9 through a second fixed column 8, the inner side wall of the fixed frame 9 is fixedly connected with a damping spring 14, one end of the damping spring 14 is fixedly connected with a damping plate 15, the bottom of the fixed frame 9 is fixedly connected with damping cotton 5, the upper end of the damping cotton 5 is fixedly connected with a buffer rubber pad 4, a lithium iron phosphate battery 2 is placed at the upper end of the buffer rubber pad 4, the damping plate 15 is tightly attached to the outer side of the lithium iron phosphate battery 2, a temperature sensor 6 is arranged on the end surface of the fixed frame 9, an upper cover 13 is detachably connected with the upper end of the shell 1 through bolts, a control box 10 is arranged at the upper end of the upper cover 13, a controller is arranged inside the control box 10, and a positive electrode 11 and a negative electrode 12 are fixedly connected with the upper end of the control box 10, the negative electrode 12 is positioned on one side of the positive electrode 11;

the electric heating film fixing device is characterized in that the controller is electrically connected with the temperature sensor 6 and the electric heating film 7 respectively, the temperature sensor 6 and the electric heating film 7 are controlled by the controller, a first fixing column 3 is arranged on one side of the electric heating film 7, the upper end and the lower end of the first fixing column 3 are fixedly connected with the fixing frame 9 and the shell 1 respectively, the fixing frame 9 is well fixed, multiple groups of air holes are formed in the inner wall of the fixing frame 9, heat emitted by the electric heating film 7 is dissipated through the air holes, the slot 16 is formed in the upper end face of the shell 1, the end face of the upper cover 13 is fixedly connected with the inserting block 17, and the inserting block 17 is matched with the slot 16, so that the upper cover 13 can be fixed with the shell 1 tightly.

Specifically, the electric heating film 7, the controller and the temperature sensor 6 are matched with each other for use, in cold winter, the temperature sensor 6 with the model number of 602F-3500F monitors the temperature of the lithium iron phosphate lithium ion power battery structure, when the temperature is very low, the temperature sensor 6 transmits the temperature data to a controller with model KG316-T, the controller controls the electric heating film 7 to be opened, so that the electric heating film 7 heats, the heat heats the lithium iron phosphate lithium ion power battery through the air vent on the surface of the fixing frame 9, thereby ensuring the use effect of the lithium iron phosphate lithium ion power battery structure, the damping spring 14 and the damping plate 15 are matched with each other for use, can play fine buffering shock attenuation to lithium iron phosphate battery 2 to prevent lithium iron phosphate battery 2 because of the phenomenon that vibrations take place the collision and damage.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An improved lithium iron phosphate lithium ion power battery structure, which comprises a shell (1), and is characterized in that: an electric heating film (7) is laid on the inner wall of the shell (1), one side of the electric heating film (7) is fixedly connected with a fixing frame (9) through a second fixing column (8), damping springs (14) are fixedly connected to the inner side wall of the fixing frame (9), a damping plate (15) is fixedly connected to one end of each damping spring (14), damping cotton (5) is fixedly connected to the bottom of the fixing frame (9), a buffer rubber pad (4) is fixedly connected to the upper end of each damping cotton (5), a lithium iron phosphate battery (2) is placed at the upper end of each buffer rubber pad (4), each damping plate (15) is tightly attached to the outer side of each lithium iron phosphate battery (2), a temperature sensor (6) is installed on the lower end face of the fixing frame (9), an upper cover (13) is detachably connected to the upper end of the shell (1) through bolts, and a control box (10) is installed at the upper end of the upper cover (13), the control box (10) internally mounted has the controller and control box (10) upper end fixedly connected with positive electrode (11) and negative electrode (12), negative electrode (12) are located positive electrode (11) one side.

2. The improved lithium iron phosphate lithium ion power cell structure of claim 1, wherein: the controller is respectively electrically connected with the temperature sensor (6) and the electrothermal film (7).

3. The improved lithium iron phosphate lithium ion power cell structure of claim 1, wherein: and a first fixing column (3) is arranged on one side of the electric heating film (7), and the upper end and the lower end of the first fixing column (3) are respectively fixedly connected with the fixing frame (9) and the shell (1).

4. The improved lithium iron phosphate lithium ion power cell structure of claim 1, wherein: the inner wall of the fixing frame (9) is provided with a plurality of groups of air holes.

5. The improved lithium iron phosphate lithium ion power cell structure of claim 1, wherein: the improved structure is characterized in that a slot (16) is formed in the upper end face of the shell (1), an insertion block (17) is fixedly connected to the lower end face of the upper cover (13), and the insertion block (17) is matched with the slot (16).